Waste coating material localizer



Aug 25, 1953 G. A. MARKER x-:T AL

WASTE COATING MATERIAL LOCALIZER Filed May 16. 1950 3Sheets-Sham'l l ZoM. aj

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Aug. Z5, 1953 G. A. HARKER ET AL. 2,650,080

' WASTE COMING MATERIAL LOCALIZER Filed May 16, 1950 3 Sheets-Sheet 2 ugf25, 1953 G. A. HARKER ETAL l 2,650,080

WASTE COATING MATERIAL LOCALIZER Filed May 1e, 195o 5 Sheets-Sheet 5 zoye W0] elsaM 075m@ Q. 23M,

Patented Aug. 25, 1953 WASTE COATING MATERIAL LOCALIZER George A. Harker, George J. Knetl, and Roy Nelson, Chicago, Ill., assignors to Binks Manufacturing Company, Chicago, Ill., a corporation of Delaware Application May 1s, 195o, serial No. 162,244

8 Claims. (Cl. 261-8) The present invention relates to the art of coating, such as spray coating with such means as spray guns or the like, and wherein the coating is performed at a locus where the over spray or coating material that is not applied to the surface or article intended, is captured, as in a spray booth or the like, and is reclaimed, as in the form of a foam, or froth, or scum, or similarly, for the ultimate purpose of preventing the contaminating of the atmosphere with such coating material. l Y

An object of the invention is to provide a novel means for collecting and localizing collected waste coating material, such as paint or the like.

Other objects, advantages, capabilities, features, and the like are comprehended by the invention as will later appear, and as are inherently possessed by the invention. Y

Referring briefly to the drawings;

Fig. 1 is a top plan view of a device constructed in accordance with the invention;

Fig. 2 is a front view in elevation of the device as shown in Fig. l;

Fig. 3 is an end view in elevation of the same;

Fig. 4 is a transverse sectionalview, on an enlarged scale, taken in a plane represented by line 4 4 in Fig. 1 of the drawings;

Fig. 5 is a fragmentary sectional view taken in a plane represented by line 5 5 in Fig. 3 of the drawings;

Fig. 6 is a fragmentary sectional view taken in a plane represented by line 6 6 shown in Fig. 1 of the drawings; and, y

Fig. 7 is a fragmentary sectional view take in a plane represented by line 'I I shown in Fig. 1 of the drawings.

Referring more in detail to the drawings the device as shown comprises, in general, an upper air cleaning structure portion II), a lower washing structure II, and a delivery structure I2 for cleaned air or the like.

The structure I0 has a spray or like receiving chamber I3 (see Fig. 4 in particular) having a wash wall or apron I4 or the like over which ows down a sheet of liquid, as water I5, for washing down or carrying down waste spray or the like of coating material, such as paint or the like, down in a well or cross-channel or duct I6.

At the rear of the wash wall or apron I4 is a wash chamber I'I having a rear wall I8 having a lower opening I 9 for aording flow of fluids from the chamber I 'I to a rear wash chamber 20 for the upward flow or movement of air, moisture, and eventually freed of suspended particles of coating material and the like, to and through a suitable eliminator 2| and thence to an upper chamber 22 of the rear wash or cleaning chamber 2U. To the upper end of the chamber 22 is an outlet duct or the like 23 in which may be located a suitable suction or exhaust fan or the like 24 operated by a suitable motor 25 by way of a motor shaft 26, pulley 21 and belt or the like 23 operatively connected to the ian or the like 24.

At the upper portion or end of the chamber I'I and part of the chamber I3 is a chamber 29, which may be called a reverse flow chamber, in which is a spray means 30, in the form of a duct having means for spraying sheets 3l, 32 or the like of Water or other cleaning or washing fluid across the flow of air or the like through such sheets 3|, 32. The sheet 3| strikes an inclined wall 33 dipped toward the apron I4 and running short thereof to provide therebetween a gap 34 for the ow of a sheet of liquid35 on the wall 33 and a sheet of liquid 36 across the gap 34 to the apron I4 to flow down as a sheetA l I6 and having a discharge lip 38 spacedly below the discharge lip 39 of the apron I4 for flow of Water and carried particles of coating material 4l) over the inclined wall 31 and lip 38, and water and carried particles of coating material I5 over the apron I4, and lip 39, into the cross duct I3 (see Fig. 4)

Referring back to the spray duct 30 the sheet 32 spraying rearwardly contacts the wall I8 and forms a descending sheet 4I of water and particles ,to the lower end of the wall I8 and across the opening I9 to the inclined wall 31. Over the duct 30 may be a deflector plate or member 42 for directing the sheets of water 3I and 32 to and toward the walls 35 and I8 respectively.

The now of laden air is from the chamber I3 (see arrows) through the water sheet 36 where some or the suspended or carried particles of coating material will be washed down with the liquid sheet 36 to the sheet I5 and thence to the duct I 6; and the air flows -up to and through the sheet 3| for further washing out of coating material particles in the sheet I5 etc; and then the air makes a half turn or whip snap in the upper part of the chamber 29 and passes through the sheet 32 for further removal of the coating material particles to the sheet I3 and thence to the sheet 40 and to the chamber or duct I6.

In the chamber 20 is a liquid duct 43 for spraying liquid sheets 44, across the `chamber 20.

to extract further particles of coating material that might still be in the air rising in the chamber 20, and to ilow down in sheets 45, 4'I on the Walls of the chamber 2!) to the Wall 37, the former to flow across the opening I9 to the sheet 4@ on the Wall 31. Above the duct 43 is a deflector 4B for forming the sheets 44, 45.

Thus as the air or the like moves up through the sheet of liquid 35 in the gap 34 and then up through the sheet of liquid 3l, and then reverses its general upward movement, reverses its path in the chamber 29 to then pass down through the sheet of liquid 32I and thence downward in the chamber I1 and to and through` the lower opening I9 below the wall I 8 and above the wall 31 also through the liquid sheet-orsheets 4I and 46 flowing down the forward and rear' surfaces of the lower portion of the wall I and across the gap or opening I9 to the liquid sheet or the like 4B flowing down the inclined wall 31 to the trough or cross duct Ib (see Fig-4). And then the air flows upward in the chamber Zit-through the sheets of liquid 44., 45 for further washing out of -particles of coating material that might be present, and thence to and through the'eliminator Ydevice 2 I, of any suitable structure, to eliminate moisture, and the like from the air, which Will drip or the like down in the chamber 2c to the sheet of water 49 flowing down the wall 3l, and also flow down the inner'sides of the walls of the chamber 2l) to also unite withV the sheets of water 45,41 flowing down tothe. wall 3'!v and sheet 40 thereon. The air passing up through the chamber Bland tothe fan 24 andby way of duct I2 is practically clean and dry.

Referring now to the lower structure I I it normally contains therein a wash or cleansing liquid, as vvvater'49, to a normal level as indicated at 50 (see Fig. 4) and at an end of said chamber Il (see Figs. l and 2) is an intake pipel leading to a pump 52 or the like suitably driven or operated by a suitable motive member,` such as a motor 53, by Way of a suitable power connection, such as a shaft or the like 54. The pump has an outlet duct or the like 55, 55a leading by way of a duct 5G connected to the spray duct 3D, and the Yduct 55, 55a is also suitably connected tothe duct 43. At the other ends the ducts 30 and 43 are connected by ducts 51, 58 both of which are connected by way of a duct 59 (see Figs. 1, 2, 3) to a return duct B into the tank Il and to the liquid 49therein.

The chamber or channel part I6 has an out- Ward or lateral extension 5I (see Figs. l, 2 and 5) leading to a well 62 having a floor G3 forming the rear end, so to speak, of a chamber `(i4, this floor being at a lower level than the floor65 of the chamber or duct 16 so liquid and collected coating particlesV usually floating on the liquid will flow from the duct I6 into the Well or well portion 52 where the liquid and floating particles of coating material o-n the liquid will move to and spread in the forwardly extending chamber 64. In that 'chamber may be located any suitable means for engaging and removing such accumulated and floating material and to bring it out ofthe chamber 64, while the cleared water remains inthe latter. It is not deemed necessary to show such removing means.

The rear wall 66 (see Fig. 6), so to speak, of the well has a low opening -SI behind which is a water well `6&3' leading up to a flow back channel or the like 69 (see Fig. l too) having ya return arm 'Ill lleading* to 'an opening 'll to afford communication with the interior of the lower structure II and also for the clear or cleared liquid to return to and replenish the liquid 49 in the chamber I I and, hence, to be used over again and again.

In the operation, the liquid sprayed from the ducts 3B, 48 While collecting, or trapping stray coating particles, will now down to the well or duct I6 and ovv to the Well portion l[52 of the chamber S4 and move to` and into the chamber 64 to sort of become more or less quiet Where the oating coating particles will be `available to any suitable means as above mentioned to engage-.and carry out the collected and iioating material or the like therein formed on the water in the chamberY 64. The cleared liquid will move through the opening El to the well `68 and return by way ofthe ducts or channels 69, 'I0 and port 'II to the liquid 49 in the liquid chamber I I. The liquid 49 serves as a reservoir from which the pump 52 draws or drafts its supply and supplies it to the ducts 3G, 43 to form cleaning or washing sheets of liquid as above described land herein disclosed.

While we have herein described and upon the drawings shown an illustrative embodiment of our invention, it is to be understood' that the invention is not limited thereto, but comprehends other constructions, arrangements of parts, details, features, or the like without departing from the spirit of the invention,

. Having thus disclosed the invention, we claim:

. 1. A waste coating material localizer for a spray receiving chamberhaving an inclined wall over'whichflows a sheet of liquid for capturing fugitive particles of' coating material and to flow down with the same to the lower end thereof, an elongated channel formed receptacle having an open top near the lower end portion of vsaid inclined wall for` directly receiving throughout the length of said channel and along the base of said inclined wall said liquid and fugitive particles of coating material, said channel at an end thereof and spacedly beyond said chamber and said inclined wall being provided with a receiving and settling well which is in direct communication with said channel for the flow into said well from said channel of said liquid and material, said Well extending down from said channel to receive the liquid and material at a lower level than in said channel where said liquid and material will be at rest for settling of said material in said well, and means for conducting the liquid cleared of said material from said well.

` 2. A device as set forth in claim 1, and wherein said'receiving well is provided with an opening at the rear part thereof, and a clear liquid collecting well exteriorly of said settling well and in communication with said opening for the receiving therein of said cleared liquid.

3. A device as set forth in claim 1, and wherein said receiving well extends forwardly and transversely of said channel to provide ample room for the settling of said material therein.

4. A device as set forth in claimV 3, and wherein said receiving Well is provided with an opening at the rear part thereof, and a clear liquid collecting well exteriorly of said settling well and in communication with said opening for the receiving therein of said cleared liquid.

5. A device as set forth in claim 1, and Wherein said receiving well is provided with an opening at the rear part thereof, and a clear liquid collecting well eXteriorly of said setting well and in communication with said opening for the receiving therein of said cleared liquid, and a owback channel connected to said clear liquid co1- lecting well for feeding back said clear liquid.

6. A device as set forth in claim 5, and wherein said oW-back channel has a return arm portion provided with an opening for the flow therethrough of said clear liquid.

7. A device as set forth in claim 6, and Wherein is provided a clean liquid chamber in communication with said back-flow return arm portion of said back flow channel by way of said opening of said return arm.

8. A device as set forth in claim 7, and wherein is provided a pump means for supplying clear liquid from said latter chamber to said inclined Wall for flow of said sheet of liquid for said capturing of fugitive particles of coating material.

GEORGE A. I-IARKER. GEORGE' J. KNETL. ROY NELSON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 819,664 Lowe May 1, 1906 1,192,569 Schilling July 25, 1916 2,086,514 Saunders et al July 6, 1937 2,167,466 Shawhan et al July 25, 1939 2,385,077 Harker et al Sept. 18, 1945 

